[MC-223305] Fix for various world generation issues

These issues seem to have a different cause. Please close this report for now.

Currently, there are multiple categories of features in the game, such as lakes, vegetation and ores. They are all generated in a specific order that isn't very logical, causing various generation problems.

Some of the features expose blocks (lakes, structures and springs). To make sure certain ores are 100% hidden (debris, large diamond ore), they should generate after those features, at the point where no more air/water generates.

I'm suggesting a new order for the features, and the reasoning for it. I'm using the feature categories named here: https://minecraft.fandom.com/wiki/Biome/JSON_format. I omitted some categories that don't cause problems.

Feature	Fixes
1. Caves
2. Aquifers
3. `LAKES` * they generate pockets in the terrain, functioning like mini-caves they expose stone - important for cave biome features and ores placed after aquifers because they could have lava
4. `UNDERGROUND_STRUCTURES` - geodes, fossils, dungeons
5. Structures	should generate after caves - fixes MC-170897 (fossils generate their own support islands, which get carved by caves) should generate after lakes - fixes MC-81467, MC-107916, ~~MC-199555~~ should generate after underground structures - fixes MC-206648
*features that generate liquids - springs (was in `VEGETAL_DECORATION`) can expose blocks - not that big of a deal since they're small, but if the intention is to have some ores 100% hidden, it would count as a bug to have them later; they could be moved at the beginning of the ores category

no more blocks are exposed after this| |

6. `UNDERGROUND_ORES` + `UNDERGROUND_DECORATION` - features that replace existing blocks: ores, stone blobs, soil disks	should generate after structures - fixes MC-181779 (1/2) some structures (mineshaft, fortress) can expose ores that would otherwise be hidden
7. `TOP_LAYER_MODIFICATION` - freezes water, adds snow on top	should generate after lakes - fixes ~~MC-132306~~
8. `VEGETAL_DECORATION` - surface features that add trees + plant blocks plants always risk having a part of them replaced some plants have special conditions, so here's a sub-order for them: wide plants: trees, chorus plants, large mushrooms 1-block wide plants (grass-like plants, vines etc.) plants that check for light: mushrooms (so that they can generate underneath wide plants) plants that check for neighboring blocks: cactus	should generate after lakes - fixes ~~MC-610~~ (1/2), ~~MC-129153~~, ~~MC-125858~~, ~~MC-137452~~ (they're kind of duplicates), ~~MC-197942~~ should generate after structures - fixes MC-140242 should generate after ores - fixes ~~MC-610~~ (2/2), MC-181779 (2/2) should generate after freezing - fixes ~~MC-129888~~

Note: some of the bugs listed may not be reproducible anymore, but they're still open.

Some examples of this new order being used:

A lake is generated in a swamp, and then a hut is generated inside it. Seagrass and lily pads generate in the remaining space.
A monument / shipwreck / jungle temple generates, then biome vegetation generates on top of it (kelp, vines etc.) - they don't need to add their own vegetation.
A village generates paths, and plants can generate only in the remaining space.

Edit: vegetation already generated after structures.